UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'CQoviob0DGIIGAS/yGSyipuODMDQnbrPW4oQLI8OIVk=' 
WHERE 
  key_id = '6fd5d18317151fa074d19792d13f43d3de933fc1fb17968d55b36e203affe94e' 
  AND (
    token = 'CQoviob0DGIIGAS/yGSyipuODMDQnbrPW4oQLI8OIVk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )